Results
Successfully delivered the retaining wall system without impacting the client's construction program despite changing ground conditions.
Maintained safe construction beneath the bridge while allowing one of Melbourne's busiest freeway corridors to remain operational throughout the works.
Delivered a durable retaining structure that provides long-term embankment stability and ongoing performance monitoring through instrumented soil nails.
Reinforced Geovert's reputation for delivering technically demanding structural shotcrete and ground engineering solutions on major transport infrastructure projects.
Project
Solution
Utilised a purpose-built low-headroom drill rig capable of drilling with casing to safely install soil nails and ground anchors beneath the bridge structure.
Revised the retaining wall methodology to incorporate a two-pass shotcrete application with additional mesh reinforcement and extended soil nails where excavation exceeded design assumptions.
Completed mesh fixing and wet-mix structural shotcrete placement to construct the permanent retaining walls while maintaining program continuity.
Installed instrumented soil nails to provide ongoing performance monitoring and independently verified all shotcrete in accordance with VicRoads requirements.
Project
Challenges
Extremely restricted headroom beneath the existing bridge limited drilling access and ruled out conventional ground engineering equipment.
Excavated ground conditions differed from the original design, requiring the retaining wall geometry and construction sequence to be reassessed during construction.
Construction was undertaken adjacent to a live freeway corridor, requiring careful planning to maintain public safety while minimising disruption to traffic.
All structural shotcrete works were required to satisfy stringent VicRoads specifications and independent quality assurance testing.
Project
Overview
Geovert was engaged by BMD Group to deliver the ground engineering package for the Point Cook Road and Central Avenue Intersection Upgrade, part of Victoria's Big Build program. The works involved constructing soil-nailed shotcrete retaining walls beneath the existing Point Cook Road bridge to stabilise the embankment supporting a new freeway ramp. Working beneath a live bridge with restricted headroom and alongside one of Melbourne's busiest roads, the project demanded specialist equipment, adaptable construction methodologies and strict compliance with VicRoads quality and durability requirements.